EP0109980A1 - Spacing element for pipes - Google Patents

Spacing element for pipes Download PDF

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Publication number
EP0109980A1
EP0109980A1 EP82111248A EP82111248A EP0109980A1 EP 0109980 A1 EP0109980 A1 EP 0109980A1 EP 82111248 A EP82111248 A EP 82111248A EP 82111248 A EP82111248 A EP 82111248A EP 0109980 A1 EP0109980 A1 EP 0109980A1
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EP
European Patent Office
Prior art keywords
clamping bolt
segments
eccentric
segment
recesses
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82111248A
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German (de)
French (fr)
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EP0109980B1 (en
Inventor
Siegfried Göhner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DIMEX-Kennzeichnungsprodukte GmbH
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DIMEX-Kennzeichnungsprodukte GmbH
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Publication date
Application filed by DIMEX-Kennzeichnungsprodukte GmbH filed Critical DIMEX-Kennzeichnungsprodukte GmbH
Priority to AT82111248T priority Critical patent/ATE19684T1/en
Priority to DE8282111248T priority patent/DE3271062D1/en
Priority to EP82111248A priority patent/EP0109980B1/en
Publication of EP0109980A1 publication Critical patent/EP0109980A1/en
Application granted granted Critical
Publication of EP0109980B1 publication Critical patent/EP0109980B1/en
Expired legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L7/00—Supporting of pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic
    • F16L7/02—Supporting of pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic and sealing the pipes or cables inside the other pipes, cables or sleeves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L7/00—Supporting of pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic

Definitions

  • the invention relates to a spacer for heavy tubes passed through protective tubes, consisting of an annular body which is composed of a plurality of segments made of plastic and connected to one another and at least partially provided with skids, each partially overlapping several times across the circumferential direction of the spacer and in their overlapping areas have mutually aligned recesses for inserting plastic pins forming joint joint organs of adjacent segments.
  • Spacers of this type have already been proposed by DE-OS 29 49 126.7.
  • the invention has for its object to form the spacer composed of several segments as an annular body so that it can be easily and securely clamped on the tubes.
  • the spacer of the type mentioned in the invention in that at least at a segment overlap point of the spacer, the plastic bolt as an eccentric clamp bolt is formed, which has a smaller diameter than the mutually aligned recesses of the segments and in sections that come to lie in the recesses of one of the two overlapping segments when the eccentric clamping bolt is inserted, is occupied by eccentric cylindrical cam bodies, the outer diameter of which is the diameter corresponds to these recesses.
  • the eccentric clamping bolt allows two adjacent segments to be drawn into one another to a greater or lesser extent in their overlap area, as a result of which a reduction in the circumference of the ring body and thereby the desired clamping of the ring body on the tube is achieved.
  • they can be provided on at least one outer surface with a toothing which engages in a counter toothing formed on a segment for securing against adjustment.
  • the teeth can be formed on the peripheral surface of at least one of the eccentric cam bodies with counter teeth on the inner surface of a segment recess, or on the end face of a stop collar at one end of the clamping bolt with counter teeth on the outside of a segment and concentric to the edge of one for the eccentric clamping bolt provided recess of this segment.
  • Longitudinal locking of the eccentric clamping bolt can be achieved by forming a flange at one end of the clamping bolt and by immersing the flange edge over a large part of the rotation range of the eccentric clamping bolt in a locking groove formed on a segment.
  • the eccentric clamping bolts have the advantage that they do not require the production of a special turnbuckle, but are used at each segment overlap point of the ring body made from all the same segments as a replacement for a simple plastic bolt which normally forms a joint joint there for two adjacent segments can.
  • the eccentric clamping bolts can be produced with a strength that absorbs the forces that occur when the ring body is tensioned, without any risk of breakage or deformation, since the adjustment path required for tensioning is generally small in the case of the ring body composed of a plurality of segments, and if necessary to several Eccentric clamping bolts can be distributed.
  • Fig. 1 shows a pipe 10 of an overhead line, which is to be laid through a protective tube, not shown, and for this purpose is spaced at intervals with spacers 11, which cause a distance of the tube 10 from the outer protective tube.
  • spacers 11 Such a spacer is partially shown in FIG. 1. It is composed of individual, relatively short segments 13, 14, the segments 13 having a rib-like projection 12 on which the tube 10 slides when it is introduced into the outer protective tube.
  • the spacer 11 can also be composed of nothing but the same segments 13, the cross section of which can be seen in FIG. 3.
  • FIG. 2 shows a plan view of one of the segments 13. It is made in one piece from plastic and is formed in its central part to the skid 12. On both sides of the middle section extend in a uniform manner Distances same extension parts 16. On the one hand there are four extension parts, on the other side three extension parts 16. The gaps 17 between the extension parts 16 have the same width as the extension parts 16, and the extension parts 16 are on one side of the segments 13 on gap to the approach parts 16 of their other side. In this way, adjacent segments 13 and 13 'with their attachment parts 16, 16' can be pushed into one another, as shown in the section of FIG. 2, so that adjacent segments 13, 13 'overlap one another.
  • the attachment parts 16, 16 'on each side of the segments 13, 13' have a through hole 18 shown in FIG. 3.
  • an eccentric clamping bolt 22 is inserted into the mutually aligned through bores 18, 18 'of the overlapping ones at at least one connection point between two adjacent segments 13 and 13' instead of a normal screw bolt 20 adjacent segments 13, 13 1st used.
  • 2 shows one with an eccentric Clamping pin 22 provided connection between two segments.
  • the eccentric clamping bolt 22 is alternated with sections 23 which have a smaller diameter than the through bores 18, 18 ', and eccentric cylindrical cam bodies 24 which are formed eccentrically to the sections 23 and whose diameter corresponds to the diameter of the through bores 18, 18 'corresponds.
  • the distribution is such that the cam bodies 24 come to rest in through bores 18 'of the extension parts 16' of the segment 13 'when the eccentric clamping bolt 22 is inserted, while the eccentric sections 23 of the eccentric clamping bolt are eccentric to the through bores 18 of the extension parts 16 of segment 13 come to rest.
  • the eccentric clamping bolt 22 protruding square mandrels 25 are formed over the end faces of the segments 13, 13 'for attaching a wrench.
  • the eccentric clamping bolt 22 is provided at one end with a stop collar 26, the edge 27 of which is designed as a securing curve, in such a way that it extends over the majority of the rotational range of the eccentric clamping bolt 22 into a securing groove 28 formed on a segment 13 ' (Fig. 2) immersed.
  • the securing groove 28 is formed on a web 29 projecting on the end face of the segment 13 '.
  • a rotary stop 34 is formed on the stop collar.
  • the eccentric clamping bolt 22 In order to prevent the eccentric clamping bolt 22 from turning back, it is provided on at least one of its outer surfaces with a toothing which engages in a counter toothing formed on a segment 13, 13 'for securing against adjustment.
  • a toothed outer surface can be the outer surface of one of the cam bodies 24 according to FIG. 4. It is sufficient if one of the several cam bodies 24 of the eccentric clamping bolt 22 is provided with an external toothing 30 which interacts in a corresponding counter toothing 31 of the through bore 18 'of the attachment part 16', in which the toothed cam body 24 comes to rest when the eccentric clamping bolt is inserted .
  • the stop collar 26 of the eccentric clamping bolt 22 can also be provided with radial toothing 32 on its side facing the segments, which cooperates with counter-radial toothing 33 which cooperates on the end face of the assigned segment, here an attachment part 16 '. of the segment 13 'cooperates.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Supports For Pipes And Cables (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

1. A spacing piece or element (11) for heavy pipes (10) extending through protective pipes, comprising an annular body composed of several segments, (13, 14) made from plastics material, connected to one another and provided at least partially with projections (12) forming sliding skids and which in each case repeatedly partially overlap transversely to the circumferential direction of the spacing element and which have, in their overlap regions, recesses (18) in alignment with one another for the insertion of plastics bolts or pins (20) which form common hinge joint members of adjacent segments, characterised in that at least at one segment overlap location of the spacing element (11) the plastics bolt is designed as an eccentric clamping bolt (22) which has portions of smaller diameter than recesses (18, 18'), in alignment with one another, of the segments (13, 13') and eccentric cylindrical cam or dog bodies (24) in portions which, with the eccentric clamping bolt (22) inserted, come to rest in the recesses (18') of one of the two overlapping segments (13, 13'), the outside diameter of said bodies (24) corresponding to the diameter of the recesses (18').

Description

Die Erfindung betrifft einen Distanzhalter für durch Schutzrohre hindurchgeführte schwere Rohre, bestehend aus einem Ringkörper, der aus mehreren, aus Kunststoff gefertigten und miteinander verbundenen, mindestens teilweise mit Gleitkufen bildenden Vorsprüngen versehenen Segmenten zusammengesetzt ist, die sich quer zur Umfangsrichtung des Distanzhalters jeweils mehrfach teilweise überlappen und in ihren Überlappungsbereichen miteinander fluchtende Ausnehmungen zum Einsetzen von gemeinsame Gelenkorgane benachbarter Segmente bildenden Kunststoffbolzen aufweisen.The invention relates to a spacer for heavy tubes passed through protective tubes, consisting of an annular body which is composed of a plurality of segments made of plastic and connected to one another and at least partially provided with skids, each partially overlapping several times across the circumferential direction of the spacer and in their overlapping areas have mutually aligned recesses for inserting plastic pins forming joint joint organs of adjacent segments.

Distanzhalter dieser Art sind durch die DE-OS 29 49 126.7 bereits vorgeschlagen worden. Der Erfindung liegt die Aufgabe zugrunde, den aus mehreren Segmenten als Ringkörper zusammengesetzten Distanzhalter so auszubilden, daß er auf den Rohren einfach und'sicher festgespannt werden kann.Spacers of this type have already been proposed by DE-OS 29 49 126.7. The invention has for its object to form the spacer composed of several segments as an annular body so that it can be easily and securely clamped on the tubes.

Die gestellte Aufgabe wird bei dem Distanzhalter der eingangs genannten Art erfindungsgemäß dadurch gelöst, daß mindestens an einer Segment-Überlappungsstelle des Distanzhalters der Kunststoffbolzen als Exzenter-Spannbolzen ausgebildet ist, der einen kleineren Durchmesser als die miteinander fluchtenden Ausnehmungen der Segmente aufweist und in Abschnitten, die bei eingesetztem Exzenter-Spannbolzen in die Ausnehmungen eines der beiden sich überlappenden Segmente zu liegen kommen, mit exzentrischen zylindrischen Nockenkörpern besetzt ist, deren Außendurchmesser dem Durchmesser dieser Ausnehmungen entspricht.The object is achieved with the spacer of the type mentioned in the invention in that at least at a segment overlap point of the spacer, the plastic bolt as an eccentric clamp bolt is formed, which has a smaller diameter than the mutually aligned recesses of the segments and in sections that come to lie in the recesses of one of the two overlapping segments when the eccentric clamping bolt is inserted, is occupied by eccentric cylindrical cam bodies, the outer diameter of which is the diameter corresponds to these recesses.

Durch den Exzenter-Spannbolzen lassen sich zwei benachbarte Segmente in ihrem Überlappungsbereich mehr oder weniger stark ineinanderziehen, wodurch eine Verkleinerung des Umfanges des Ringkörpers und dadurch das erwünschte Festspannen des Ringkörpers auf dem Rohr erreicht wird. Um den oder die Exzenter-Spannbolzen in einer eingestellten Lage zu halten, kann er bzw. können sie auf mindestens einer Außenfläche mit einer Verzahnung versehen sein, die zur Verstellsicherung in eine an einem Segment ausgebildete Gegenverzahnung eingreift. Die Verzahnung kann auf der Umfangsfläche mindestens eines der exzentrischen Nockenkörper mit Gegenverzahnung auf der Innenfläche einer Segmentausnehmung ausgebildet sein, oder aber auf der Stirnseite eines Anschlagbundes am einen Ende des Spannbolzens mit Gegenverzahnung auf der Außenseite eines Segmentes und konzentrisch zum Rand einer für den Exzenter-Spannbolzen vorgesehenen Ausnehmung dieses Segmentes. Eine Langsverschiebesicherung der Exzenter-Spannbolzen läßt sich durch die Ausbildung eines Flansches am einen Ende des Spannbolzens und dadurch erzielen, daß der Flanschrand über den größten Teil des Drehbereiches des Exzenter-Spannbolzens in eine an einem Segment ausgebildete Sicherungsnut eintaucht.The eccentric clamping bolt allows two adjacent segments to be drawn into one another to a greater or lesser extent in their overlap area, as a result of which a reduction in the circumference of the ring body and thereby the desired clamping of the ring body on the tube is achieved. In order to keep the eccentric clamping bolt (s) in a set position, they can be provided on at least one outer surface with a toothing which engages in a counter toothing formed on a segment for securing against adjustment. The teeth can be formed on the peripheral surface of at least one of the eccentric cam bodies with counter teeth on the inner surface of a segment recess, or on the end face of a stop collar at one end of the clamping bolt with counter teeth on the outside of a segment and concentric to the edge of one for the eccentric clamping bolt provided recess of this segment. Longitudinal locking of the eccentric clamping bolt can be achieved by forming a flange at one end of the clamping bolt and by immersing the flange edge over a large part of the rotation range of the eccentric clamping bolt in a locking groove formed on a segment.

Die Exzenter-Spannbolzen haben den Vorteil, daß sie nicht die Herstellung eines besonderen Spannschlosses erforderlich machen, sondern an jeder Segment-Uberlappungsstelle des aus lauter gleichen Segmenten hergestellten Ringkörpers als Ersatz für einen dort normalerweise ein gemeinsames Gelenkorgan für zwei benachbarte Segmente bildenden einfachen Kunststoffbolzen eingesetzt werden können. Die Exzenter-Spannbolzen lassen sich mit einer die bei einem Spannen des Ringkörpers auftretenden Kräfte mit Sicherheit ohne Bruch- oder Verformungsgefahr aufnehmender Stärke herstellen, da der zum Spannen erforderliche Verstellweg bei dem aus einer Vielzahl von Segmenten zusammengesetzten Ringkörper im allgemeinen gering ist und erforderlichenfalls auf mehrere Exzenter-Spannbolzen verteilt werden kann.The eccentric clamping bolts have the advantage that they do not require the production of a special turnbuckle, but are used at each segment overlap point of the ring body made from all the same segments as a replacement for a simple plastic bolt which normally forms a joint joint there for two adjacent segments can. The eccentric clamping bolts can be produced with a strength that absorbs the forces that occur when the ring body is tensioned, without any risk of breakage or deformation, since the adjustment path required for tensioning is generally small in the case of the ring body composed of a plurality of segments, and if necessary to several Eccentric clamping bolts can be distributed.

Nachfolgend wird ein Ausführungsbeispiel eines erfindungsgemäß ausgebildeten Distanzhalters anhand der beiliegenden Zeichnung näher erläutert.An exemplary embodiment of a spacer designed according to the invention is explained in more detail below with reference to the accompanying drawing.

Im einzelnen zeigen:

  • Fig. 1 eine perspektivische Darstellung eines von einem Distanzhalter umgebenen Rohres;
  • Fig. 2 eine Draufsicht in Richtung des Pfeiles II in Fig. 1 auf ein Einzelsegment des Ringkörpers und auf die Verbindungsstelle mit einem benachbarten Segment in gegenüber Fig. 1 vergrößertem Maßstab und im Bereich der Verbindungsstelle im Schnitt;
  • Fig. 3 ein Ringkörper-Segment in stirnseitiger Ansicht und teilweise im Schnitt entlang der Linie 111-111 in Fig. 2;
  • Fig. 4 einen Teilschnitt durch die Verbindungsstelle zwischen zwei Ringkörper-Segmenten entlang der Linie IV-IV in Fig. 2;
  • Fig. 5 einen Teilschnitt im Bereich der Verbindungsstelle zwischen zwei Ringkörper-Segmenten entlang der Linie V in Fig. 2.
In detail show:
  • Figure 1 is a perspective view of a tube surrounded by a spacer.
  • FIG. 2 shows a plan view in the direction of arrow II in FIG. 1 of an individual segment of the ring body and of the connection point with an adjacent segment on an enlarged scale compared to FIG. 1 and in the area of the connection point on average;
  • 3 shows an annular body segment in an end view and partly in section along the line 111-111 in FIG. 2;
  • 4 shows a partial section through the connection point between two ring body segments along the line IV-IV in FIG. 2;
  • 5 shows a partial section in the area of the connection point between two ring body segments along the line V in FIG. 2.

Fig. 1 zeigt ein Rohr 10 einer Freileitung, das durch ein nicht dargestelltes Schutzrohr hindurch verlegt werden soll und zu diesem Zweck in Abständen mit Distanzhaltern 11 besetzt wird, die einen Abstand des Rohres 10 vom äußeren Schutzrohr bewirken. In Fig. 1 ist ein solcher Distanzhalter teilweise dargestellt. Er ist aus einzelnen, relativ kurzen Segmenten 13, 14 zusammengesetzt, wobei die Segmente 13 einen rippenartigen Vorsprung 12 aufweisen, auf welchen das Rohr 10 beim Einbringen in das äußere Schutzrohr gleitet. Der Distanzhalter 11 kann aber auch aus lauter gleichen Segmenten 13 zusammengesetzt sein, deren Querschnitt aus Fig. 3 ersichtlich ist.Fig. 1 shows a pipe 10 of an overhead line, which is to be laid through a protective tube, not shown, and for this purpose is spaced at intervals with spacers 11, which cause a distance of the tube 10 from the outer protective tube. Such a spacer is partially shown in FIG. 1. It is composed of individual, relatively short segments 13, 14, the segments 13 having a rib-like projection 12 on which the tube 10 slides when it is introduced into the outer protective tube. The spacer 11 can also be composed of nothing but the same segments 13, the cross section of which can be seen in FIG. 3.

Fig. 2 zeigt eine Draufsicht auf eines der Segmente 13. Es ist einstückig aus Kunststoff gefertigt und in seinem Mittelteil zu der Gleitkufe 12 ausgebildet. Zu beiden Seiten des Mittelteiles erstrecken sich in gleichmäßigen Abständen gleiche Ansatzteile 16. Auf der einen Seite sind es vier Ansatzteile, auf der anderen Seite drei Ansatzteile 16. Die zwischen den Ansatzteilen 16 befindlichen Lücken 17 haben die gleiche Breite wie die Ansatzteile 16, und die Ansatzteile 16 der einen Seite der Segmente 13 stehen auf Lücke zu den Ansatzteilen 16 ihrer anderen Seite. Auf diese Weise lassen sich benachbarte Segmente 13 und 13' mit ihren Ansatzteilen 16, 16' ineinanderschieben, wie dies im geschnittenen Teil der Fig. 2 dargestellt ist, so daß sich benachbarte Segmente 13, 13' gegenseitig überlappen. Die Ansatzteile 16, 16' jeder Seite der Segmente 13, 13' weisen eine aus Fig. 3 ersichtliche Durchgangsbohrung 18 auf. Die Durchgangsbohrungen 18 aller gleichgerichteten Ansätze 16, 16' fluchten miteinander. Durch die miteinander fluchtenden Durchgangsbohrungen 18 der mit ihren Ansätzen ineinandergeschobenen benachbarten Segmente 13, 13' ragen als Gelenkverbindungselemente aus Kunststoff gefertigte Schraubbolzen 20 (Fig. 1). Zur Materialersparnis sind gemäß Fig. 3 in den Segmenten 13 im Bereich der Gleitkufe 12 zur rohrseitigen Anlagefläche 21 des Segmentes 13 hin offene Ausnehmungen 19 vorgesehen, durch welche auch eine Gewichtsverminderung des Distanzhalters 11 erreicht wird.FIG. 2 shows a plan view of one of the segments 13. It is made in one piece from plastic and is formed in its central part to the skid 12. On both sides of the middle section extend in a uniform manner Distances same extension parts 16. On the one hand there are four extension parts, on the other side three extension parts 16. The gaps 17 between the extension parts 16 have the same width as the extension parts 16, and the extension parts 16 are on one side of the segments 13 on gap to the approach parts 16 of their other side. In this way, adjacent segments 13 and 13 'with their attachment parts 16, 16' can be pushed into one another, as shown in the section of FIG. 2, so that adjacent segments 13, 13 'overlap one another. The attachment parts 16, 16 'on each side of the segments 13, 13' have a through hole 18 shown in FIG. 3. The through bores 18 of all rectified approaches 16, 16 'are aligned with one another. Screw bolts 20 made of plastic (art. 1) protrude through the mutually aligned through bores 18 of the adjacent segments 13, 13 ', which are pushed into one another with their approaches. To save material, according to FIG. 3, in the segments 13 in the region of the skid 12 to the pipe-side contact surface 21 of the segment 13 open recesses 19 are provided, through which a reduction in weight of the spacer 11 is also achieved.

Zum Festspannen des aus den mehreren Segmenten 13 zusammengesetzten Distanzhalters 11 auf dem Rohr 1.0 ist an mindestens einer Verbindungsstelle zwischen zwei benachbarten Segmenten 13 und 13' anstelle eines normalen Schraubbolzens 20 ein Exzenter-Spannbolzen 22 in die miteinander fluchtenden Durchgangsbohrungen 18, 18' der sich überlappenden benachbarten Segmente 13, 131.eingesetzt. Fig. 2 zeigt eine solche mit einem Exzenter-Spannbolzen 22 versehene Verbindungsstelle zwischen zwei Segmenten. Der Exzenter-Spannbolzen 22 ist gemäß Fig. 2 und 3 abwechselnd mit Abschnitten 23, die einen kleineren Durchmesser als die Durchgangsbohrungen 18, 18' aufweisen, und exzentrisch zu den Abschnitten 23 ausgebildeten zylindrischen Nockenkörpern 24, deren Durchmesser dem Durchmesser der Durchgangsbohrungen 18, 18' entspricht, versehen. Die Aufteilung ist so getroffen, daß die Nockenkörper 24 bei eingesetztem Exzenter-Spannbolzen 22 jeweils in Durchgangsbohrungen 18' der Ansatzteile 16' des Segmentes 13' zu liegen kommen, während die dazu exzentrischen Abschnitte 23 des Exzenter-Spannbolzens in die Durchgangsbohrungen 18 der Ansatzteile 16 des Segmentes 13 zu liegen kommen.To clamp the spacer 11 composed of the several segments 13 on the pipe 1.0, an eccentric clamping bolt 22 is inserted into the mutually aligned through bores 18, 18 'of the overlapping ones at at least one connection point between two adjacent segments 13 and 13' instead of a normal screw bolt 20 adjacent segments 13, 13 1st used. 2 shows one with an eccentric Clamping pin 22 provided connection between two segments. 2 and 3, the eccentric clamping bolt 22 is alternated with sections 23 which have a smaller diameter than the through bores 18, 18 ', and eccentric cylindrical cam bodies 24 which are formed eccentrically to the sections 23 and whose diameter corresponds to the diameter of the through bores 18, 18 'corresponds. The distribution is such that the cam bodies 24 come to rest in through bores 18 'of the extension parts 16' of the segment 13 'when the eccentric clamping bolt 22 is inserted, while the eccentric sections 23 of the eccentric clamping bolt are eccentric to the through bores 18 of the extension parts 16 of segment 13 come to rest.

An beiden Enden des Exzenter-Spannbolzens 22 sind über die Stirnseiten der Segmente 13, 13' vorstehende Vierkantdorne 25 zum Ansetzen eines Schraubenschlüssels ausgebildet. Außerdem ist der Exzenter-Spannbolzen 22 an seinem einen Ende mit einem Anschlagbund 26 versehen, dessen Rand 27 als Sicherungskurve ausgebildet ist, dergestalt, daß er über den größten Teil des Drehbereiches des Exzenter-Spannbolzens 22 in eine am einen Segment 13' ausgebildete Sicherungsnut 28 (Fig. 2) eintaucht. Die Sicherungsnut 28 ist an einem auf der Stirnseite des Segmentes 13' vorspringenden Steg 29 ausgebildet.At both ends of the eccentric clamping bolt 22 protruding square mandrels 25 are formed over the end faces of the segments 13, 13 'for attaching a wrench. In addition, the eccentric clamping bolt 22 is provided at one end with a stop collar 26, the edge 27 of which is designed as a securing curve, in such a way that it extends over the majority of the rotational range of the eccentric clamping bolt 22 into a securing groove 28 formed on a segment 13 ' (Fig. 2) immersed. The securing groove 28 is formed on a web 29 projecting on the end face of the segment 13 '.

Durch Drehen des eingeschobenen Exzenter-Spannbolzens 22 bis maximal 1800 werden durch die zueinander exzentrischen Abschnitte 23 und Nockenkörper 24 des Spannbolzens 22 die benachbarten Segmente 13 und 13' mit ihren Ansatzteilen 16, 16' stärker ineinandergezogen, wodurch zwangsläufig eine Durchmesserverminderung des ringförmigen Distanzhalters 11 und damit sein Festspannen auf dem Rohr 10 bewirkt wird.By turning of the inserted eccentric clamping bolt 22 to a maximum of 180 0 by the mutually eccentric portions 23 and cam body 24 are the clamping bolt the adjacent segments 'with their boss portions 16, 16' more into each drawn 22 13 and 13, thereby forcing a reduction in diameter of the annular spacer 11 and thus its tightening on the tube 10 is effected.

Um ein Drehen um mehr als 180° zu verhindern, ist am Anschlagbund ein Drehanschlag 34 ausgebildet. Um ein Rückdrehen des Exzenter-Spannbolzens 22 zu verhindern, ist er auf mindestens einer seiner Außenflächen mit einer Verzahnung versehen, die zur Verstellsicherung in eine an einem Segment 13, 13' ausgebildete Gegenverzahnung eingreift. Eine solche verzahnte Außenfläche kann gemäß Fig. 4 die Außenfläche eines der Nockenkörper 24 sein. Es genügt, wenn einer der mehreren Nockenkörper 24 des Exzenter-Spannbolzens 22 mit einer Außenverzahnung 30 versehen ist, die in eine entsprechende Gegenverzahnung 31 der Durchgangsbohrung18' des Ansatzteiles 16' zusammenwirkt, in welchen der gezahnte Nockenkörper 24 bei eingeschobenem Exzenter-Spannbolzen zu liegen kommt. Zur Rückdrehsicherung kann aber auch nach Fig. 5 der Anschlagbund 26 des Exzenter-Spannbolzens 22 auf seiner den Segmenten zugekehrten Seite mit einer Radialverzahnung 32 versehen sein, die mit einer Gegenradialverzahnung 33 zusammenwirkt, die auf der Stirnseite des zugeordneten Segmentes, hier eines Ansatzteiles 16' des Segmentes 13', zusammenwirkt.In order to prevent rotation by more than 180 °, a rotary stop 34 is formed on the stop collar. In order to prevent the eccentric clamping bolt 22 from turning back, it is provided on at least one of its outer surfaces with a toothing which engages in a counter toothing formed on a segment 13, 13 'for securing against adjustment. Such a toothed outer surface can be the outer surface of one of the cam bodies 24 according to FIG. 4. It is sufficient if one of the several cam bodies 24 of the eccentric clamping bolt 22 is provided with an external toothing 30 which interacts in a corresponding counter toothing 31 of the through bore 18 'of the attachment part 16', in which the toothed cam body 24 comes to rest when the eccentric clamping bolt is inserted . 5, the stop collar 26 of the eccentric clamping bolt 22 can also be provided with radial toothing 32 on its side facing the segments, which cooperates with counter-radial toothing 33 which cooperates on the end face of the assigned segment, here an attachment part 16 '. of the segment 13 'cooperates.

Claims (6)

1. Distanzhalter für durch Schutzrohre hindurchgeführte schwere Rohre, bestehend aus einem Ringkörper, der aus mehreren, aus Kunststoff gefertigten und miteinander verbundenen, mindestens teilweise mit Gleitkufen bildenden Vorsprüngen versehenen Segmenten zusammengesetzt ist, die sich quer zur Umfangsrichtung des Distanzhalters jeweils mehrfach teilweise überlappen und in ihren Überlappungsbereichen miteinander fluchtende Ausnehmungen zum Einsetzen von gemeinsame Gelenkorgane benachbarter Segmente bildenden Kunststoffbolzen aufweisen, dadurch gekennzeichnet, daß mindestens an einer Segment-Überlappungsstelle des Distanzhalters (11) der Kunststoffbolzen als Exzenter-Spannbolzen (22) ausgebildet ist, der einen kleineren Durchmesser (Abschnitte 23) als die miteinander fluchtenden Ausnehmungen (18, 18') der Segmente (13, 13') aufweist und in Abschnitten, die bei eingesetztem Exzenter-Spannbolzen (22) in die Ausnehmungen (18') eines der beiden sich überlappenden Segmente (13, 13') zu liegen kommen, mit exzentrischen zylindrischen Nockenkörpern (24) besetzt ist, deren Außendurchmesser dem Durchmesser dieser Ausnehmungen (18') entspricht.1.Spacer for heavy pipes passed through protective tubes, consisting of an annular body which is composed of a plurality of segments made of plastic and connected to one another and at least partially provided with skids, each of which overlaps several times transversely to the circumferential direction of the spacer and in have overlapping areas of aligned recesses for the insertion of joint elements of adjacent segments forming plastic bolts, characterized in that at least at one segment overlap point of the spacer (11) the plastic bolt is designed as an eccentric clamping bolt (22) which has a smaller diameter (sections 23 ) as the mutually aligned recesses (18, 18 ') of the segments (13, 13') and in sections which, when the eccentric clamping bolt (22) is inserted, into the recesses (18 ') of one of the two overlapping segments (13, 13 ') to lie come with eccentric cylindrical cam bodies (24) whose outer diameter corresponds to the diameter of these recesses (18 '). 2. Distanzhalter nach Anspruch 1, dadurch gekennzeichnet, daß der Exzenter-Spannbolzen (22) auf mindestens einer Außenfläche mit einer Verzahnung versehen ist, die zur Verstellsicherung in eine an einem Segment (13, 13') ausgebildete Gegenverzahnung eingreift.2. Spacer according to claim 1, characterized in that the eccentric clamping bolt (22) is provided on at least one outer surface with a toothing which engages to secure against adjustment in a segment (13, 13 ') formed counter teeth. 3. Distanzhalter nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Verzahnung (30) auf der Umfangsfläche mindestens eines der exzentrischen Nockenkörper (24) und die Gegenverzahnung (31) auf der Innenfläche einer Segmentausnehmung (18') ausgebildet sind, in welche der Nockenkörper (24) bei eingesetztem Exzenter-Spannbolzen (22) zu liegen kommt.3. Spacer according to claim 1 and 2, characterized in that the toothing (30) on the peripheral surface of at least one of the eccentric cam bodies (24) and the counter toothing (31) on the inner surface of a segment recess (18 ') are formed, in which the Cam body (24) comes to rest when the eccentric clamping bolt (22) is inserted. 4. Distanzhalter nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Verzahnung (32) auf der Stirnseite eines Anschlagbundes (26) am einen Ende des Spannbolzens (22) ausgebildet ist und mit einer auf der Außenseite eines Segmentes (13') konzentrisch zum Rand einer Ausnehmung (18') ausgebildeten Gegenverzahnung (33) zusammenwirkt.4. Spacer according to claim 1 and 2, characterized in that the toothing (32) on the end face of a stop collar (26) is formed at one end of the clamping bolt (22) and with one on the outside of a segment (13 ') concentrically to Edge of a recess (18 ') designed counter-teeth (33) cooperates. 5. Distanzhalter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Anschlagbund (26) am einen Ende des Exzenter-Spannbolzens (22) einen Rand (27) aufweist, der über den größten Teil des Drehbereiches des Exzenter-Spannbolzens (22) in eine an einem Segment (13') ausgebildete Sicherungsnut (28) eintaucht.5. Spacer according to one of claims 1 to 4, characterized in that the stop collar (26) at one end of the eccentric clamping bolt (22) has an edge (27) which over most of the range of rotation of the eccentric clamping bolt (22nd ) immersed in a securing groove (28) formed on a segment (13 '). 6. Distanzhalter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß am Anschlagbund (26) ein Drehanschlag (34) ausgebildet ist, der um 1800 gegenüber der durch die Gestaltung des Randes (27) des Anschlagbundes vorgegebenen Einsetzstellung des Spannbolzens (22) versetzt ist.6. Spacer according to one of claims 1 to 5, characterized in that a rotary stop (34) is formed on the stop collar (26) which by 180 0 relative to the predetermined by the design of the edge (27) of the stop collar insert position of the clamping bolt (22nd ) is offset.
EP82111248A 1982-12-04 1982-12-04 Spacing element for pipes Expired EP0109980B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT82111248T ATE19684T1 (en) 1982-12-04 1982-12-04 SPACER FOR PIPES.
DE8282111248T DE3271062D1 (en) 1982-12-04 1982-12-04 Spacing element for pipes
EP82111248A EP0109980B1 (en) 1982-12-04 1982-12-04 Spacing element for pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82111248A EP0109980B1 (en) 1982-12-04 1982-12-04 Spacing element for pipes

Publications (2)

Publication Number Publication Date
EP0109980A1 true EP0109980A1 (en) 1984-06-13
EP0109980B1 EP0109980B1 (en) 1986-05-07

Family

ID=8189375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82111248A Expired EP0109980B1 (en) 1982-12-04 1982-12-04 Spacing element for pipes

Country Status (3)

Country Link
EP (1) EP0109980B1 (en)
AT (1) ATE19684T1 (en)
DE (1) DE3271062D1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182378A (en) * 1976-10-20 1980-01-08 Dieter Spezial-Isolierungen Gmbh & Co. Spacing element for spacing an inner pipe from an outer pipe
DE2906487A1 (en) * 1979-02-20 1980-08-28 Wegurit Gmbh Support fitting for pipeline - has sockets by which fittings can be assembled together and flat base to allow pipeline to slide
DE2949126A1 (en) * 1979-12-06 1981-06-11 Dimex-Kennzeichnungsprodukte GmbH, 7406 Mössingen Spacer ring for coaxial tubes - comprises plastics segments assembled to form ring to provide radial spacing between tubes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182378A (en) * 1976-10-20 1980-01-08 Dieter Spezial-Isolierungen Gmbh & Co. Spacing element for spacing an inner pipe from an outer pipe
DE2906487A1 (en) * 1979-02-20 1980-08-28 Wegurit Gmbh Support fitting for pipeline - has sockets by which fittings can be assembled together and flat base to allow pipeline to slide
DE2949126A1 (en) * 1979-12-06 1981-06-11 Dimex-Kennzeichnungsprodukte GmbH, 7406 Mössingen Spacer ring for coaxial tubes - comprises plastics segments assembled to form ring to provide radial spacing between tubes

Also Published As

Publication number Publication date
ATE19684T1 (en) 1986-05-15
EP0109980B1 (en) 1986-05-07
DE3271062D1 (en) 1986-06-12

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